Shared network registration method and device and storage medium

Abstract

The invention discloses a shared network registration method and device and a storage medium, relates to the field of communication, and can realize network registration of terminal equipment in an indirect network sharing scene. The method comprises the following steps: sending subscription data acquisition request information to a unified data management UDM network element in a second PLMN network; the subscription data acquisition request information comprises parameters used for identifying the first PLMN network; receiving target subscription data from the UDM network element in the second PLMN network; and completing registration of the shared network based on the target subscription data. The embodiment of the invention is applied to the registration process of the shared network.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a registration method, device and storage medium for a shared network. Background Art

[0002] In the indirect network sharing scenario, the shared base station of the contractor operator is connected to the core network of other participating operators through the core network of the contractor operator, and broadcasts a public land mobile network (PLMN) identity (ID) for each of the other participating operators. The PLMN ID may be the same as or different from the PLMN ID broadcast by the next generation radio access network (NG Radio Access Network, NG-RAN) of the other participating operators. When the terminal equipment (UE) belonging to other participating operators initiates network registration in the shared area covered by the contractor operator, the access and mobility management function (AMF) network element of the contractor operator can recognize that the UE accesses the network through indirect network sharing technology, and completes the network registration by interacting with the core network element of the corresponding participating operator.

[0003] In the related technology, the relevant network elements of the core network of other participating operators cannot recognize that the registration process is for the network registration of UEs accessing the network through indirect network sharing technology, nor can they recognize the corresponding network of the contractor operator. As a result, the relevant network elements of the core network of other participating operators cannot correctly provide or obtain data related to the contract of the contractor operator's network, resulting in the inability to correctly complete the network registration. Therefore, how to realize the network registration of terminal devices in the indirect network sharing scenario is a technical problem that still needs to be solved. Summary of the invention

[0004] The present application provides a shared network registration method, device and storage medium for implementing network registration of terminal devices in an indirect network sharing scenario.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a registration method for a shared network, including: an AMF network element in a first PLMN network sends a subscription data acquisition request message to a unified data management (UDM) network element in a second PLMN network; the subscription data acquisition request message includes a parameter for identifying the first PLMN network; the AMF network element in the first PLMN network receives target subscription data from the UDM network element in the second PLMN network; the AMF network element in the first PLMN network completes the registration of the shared network based on the target subscription data.

[0007] In a possible implementation, a registration request message is received from a terminal device; the registration request message includes a target public land mobile network identifier PLMN ID and a user confidentiality identifier SUCI, and the SUCI includes a home public land mobile network identifier HPLMN ID; based on the selected PLMN ID and the HPLMN ID, it is identified that the terminal device accesses a network through an indirect network sharing technology, and an indirect network sharing parameter is generated; the indirect network sharing parameter is used to identify an identifier of a first PLMN network and that the terminal device accesses a network through the indirect network sharing technology; and according to the indirect network sharing parameter, a subscription data acquisition request message is generated.

[0008] In a possible implementation, based on the HPLMN ID, a second PLMN network corresponding to the HPLMN ID is determined; and first response information from a UDM network element in the second PLMN network is received, where the first response information is used to indicate that the UDM network element has completed creating the registration information.

[0009] In one possible implementation, a first PDU session establishment request message is received from a terminal device; the first PDU session establishment request message includes session information of the terminal device; a second PDU session establishment request message is sent to a session management function SMF network element in a first PLMN network, so that the SMF network element in the first PLMN network sends a third PDU session establishment request message to the SMF network element in the second PLMN network; the second PDU session establishment request message includes an indirect network sharing parameter, and the third PDU session establishment request message includes an indirect network sharing parameter.

[0010] The shared network registration method of the present application can also be applied to signaling processes between other core network elements, but they will not be described one by one here.

[0011] In a second aspect, the present application provides a registration method for a shared network, comprising: receiving a subscription data acquisition request message sent from an AMF network element in a first PLMN network; the subscription data acquisition request message includes an identifier for identifying the first PLMN network; based on the identifier of the first PLMN network and a subscription data list, determining target subscription data; the subscription data list includes subscription data corresponding to the identifier of at least one PLMN network; sending the target subscription data to the AMF network element in the first PLMN network.

[0012] In a possible implementation, when the UDM network element in the second PLMN network does not have the target subscription data, a first indication message is sent to the AMF network element in the first PLMN network; the first indication message is used to indicate that the registration of the AMF network element in the first PLMN network has failed.

[0013] In a third aspect, the present application provides a registration device for a shared network, comprising: a communication unit and a processing unit, the communication unit being used to send a contract data acquisition request message to a UDM network element in a second PLMN network; the contract data acquisition request message comprising parameters for identifying a first PLMN network; the communication unit being used to receive target contract data from the UDM network element in the second PLMN network; the processing unit being further used to complete the registration of the shared network based on the target contract data.

[0014] In a possible implementation, the communication unit is further used to receive registration request information from the terminal device; the registration request information includes a target public land mobile network identifier PLMN ID and a permanent user identity identifier SUCI, and the SUCI includes a home public land mobile network identifier HPLMN ID; the processing unit is further used to identify, based on the selected PLMN ID and the HPLMN ID, that the terminal device accesses the network through an indirect sharing technology network, and generate an indirect network sharing parameter; the indirect network sharing parameter is used to identify an identifier of the first PLMN network and that the terminal device accesses the network through an indirect network sharing technology; the processing unit is further used to generate a subscription data acquisition request information according to the indirect network sharing parameter.

[0015] In a possible implementation, the processing unit is further used to determine, based on the HPLMN ID, a second PLMN network corresponding to the HPLMN ID; the communication unit is further used to receive first response information from a UDM network element in the second PLMN network, where the first response information is used to indicate that the UDM network element has completed creating the registration information.

[0016] In one possible implementation, the communication unit is also used to receive a first PDU session establishment request information from a terminal device; the first PDU session establishment request information includes session information of the terminal device; the communication unit is also used to send a second PDU session establishment request information to a session management function SMF network element in a first PLMN network, so that the SMF network element in the first PLMN network sends a third PDU session establishment request information to the SMF network element in the second PLMN network; the second PDU session establishment request information includes an indirect network sharing parameter, and the third PDU session establishment request information includes an indirect network sharing parameter.

[0017] In a fourth aspect, the present application provides a registration device for a shared network, comprising: a communication unit and a processing unit: a communication unit, used to receive a contract data acquisition request information sent from an AMF network element in a first PLMN network; the contract data acquisition request information includes parameters for identifying the first PLMN network; a processing unit, used to determine target contract data based on the identifier of the first PLMN network and a contract data list; the contract data list includes contract data corresponding to the identifier of at least one PLMN network; a communication unit, used to send target contract data to the AMF network element in the first PLMN network.

[0018] In one possible implementation, the communication unit is also used to instruct the communication unit to send a first indication message to the AMF network element in the first PLMN network when the target subscription data does not exist in the UDM network element in the second PLMN network; the first indication message is used to indicate that the registration of the AMF network element in the first PLMN network has failed.

[0019] In a fifth aspect, an embodiment of the present application provides a registration device for a shared network, the registration device for a shared network comprising: a processor and a memory; wherein the memory is used to store computer execution instructions, and when the registration device for the shared network is running, the processor executes the computer execution instructions stored in the memory, so that the registration device for the shared network performs the registration method for the shared network as described in the first aspect and any possible implementation method of the first aspect.

[0020] In a sixth aspect, an embodiment of the present application provides a registration device for a shared network, the registration device for a shared network comprising: a processor and a memory; wherein the memory is used to store computer execution instructions, and when the registration device for the shared network is running, the processor executes the computer execution instructions stored in the memory, so that the registration device for the shared network performs the registration method for the shared network as described in the second aspect and any possible implementation of the second aspect.

[0021] In the seventh aspect, an embodiment of the present application provides a computer-readable storage medium, in which instructions are stored. When the instructions in the computer-readable storage medium are executed by a processor of a registration device for a shared network, the registration device for the shared network can execute the registration method for the shared network as described in the first aspect and any possible implementation of the first aspect.

[0022] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, in which instructions are stored. When the instructions in the computer-readable storage medium are executed by a processor of a registration device for a shared network, the registration device for the shared network can execute a registration method for a shared network as described in the second aspect and any possible implementation of the second aspect.

[0023] In the ninth aspect, an embodiment of the present application provides a chip, the chip including a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a computer program or instructions to implement the registration method for a shared network described in the above first aspect and any possible implementation method of the first aspect.

[0024] In the tenth aspect, an embodiment of the present application provides a chip, the chip including a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a computer program or instructions to implement the registration method for a shared network described in the above second aspect and any possible implementation of the second aspect.

[0025] In an eleventh aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method for registering a shared network described in the first aspect and any possible implementation manner of the first aspect.

[0026] In a twelfth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the shared network registration method described in the first aspect and any possible implementation manner of the first aspect.

[0027] In the present disclosure, the name of the above-mentioned shared network registration device does not limit the device or functional module itself. In actual implementation, these devices or functional modules may appear with other names. As long as the functions of each device or functional module are similar to those of the present disclosure, they fall within the scope of the claims of the present disclosure and their equivalent technologies.

[0028] These and other aspects of the present application will become more apparent from the following description.

[0029] The above scheme brings at least the following beneficial effects: In the embodiment of the present application, the AMF network element in the first PLMN network sends a subscription data acquisition request message to the UDM network element in the second PLMN network. Since the subscription data acquisition request message contains an identification parameter for identifying the first PLMN network, the UDM network element in the second PLMN network can identify that the policy request message comes from the shared network. In this way, the UDM network element in the second PLMN network determines and sends the target subscription data to the AMF network element in the first PLMN network based on the identification and subscription data list of the first PLMN network, and then the AMF network element in the first PLMN network can complete the registration of the shared network according to the target subscription data. Compared with the prior art, the UDM network element in the second PLMN network in the present application can identify that the subscription data acquisition request message comes from the shared network based on the subscription data acquisition request message containing the identification of the first PLMN network, and then accurately configure the target subscription data for the AMF network element in the first PLMN network, so that the AMF network element in the first PLMN network completes the registration of the shared network based on the target subscription data, thereby realizing the registration of the terminal device to the shared network. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the structure of a network sharing scenario system provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the structure of a registration device for a shared network provided in an embodiment of the present application;

[0033] Figure 3 A flowchart of a method for registering a shared network provided in an embodiment of the present application;

[0034] Figure 4 A flowchart of a method for registering a shared network provided in an embodiment of the present application;

[0035] Figure 5 A relationship diagram between the time granularity and deviation of a target service provided in an embodiment of the present application;

[0036] Figure 6 A flowchart of a method for registering a shared network provided in an embodiment of the present application;

[0037] Figure 7A relationship diagram between the rate of a first combined call record and the downlink rate of the PDCP layer provided in an embodiment of the present application;

[0038] Figure 8 A flowchart of a method for registering a shared network provided in an embodiment of the present application;

[0039] Fig. 9 A flowchart of a method for registering a shared network provided in an embodiment of the present application;

[0040] Fig.10 A schematic diagram of the structure of another shared network registration device provided in an embodiment of the present application;

[0041] Fig.11 A schematic diagram of the structure of another shared network registration device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0043] The terms "first" and "second" and the like in the specification and drawings of this application are used to distinguish different objects, or to distinguish different processing of the same object, rather than to describe a specific order of objects.

[0044] In addition, the terms "including" and "having" and any variations thereof mentioned in the description of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0045] It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0046] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0047] The following is an explanation of the terms used in this application.

[0048] 1. Network sharing scene system

[0049] The International Telecommunications Standards Organization's 3rd Generation Partnership Project (3 rd The 3rd Generation Partnership Project (3GPP) defined new network sharing scenarios and requirements in the Release-19 requirement phase of 5GC. For example, the structural diagram of the network sharing scenario system can be as follows: Figure 1 shown.

[0050] The network sharing scenario system includes the core network equipment of operator A, the core network equipment of operator B, the core network equipment of operator C, the core network equipment of operator X (referred to as the first core network equipment), and the access network equipment of operator X (referred to as the first access network equipment).

[0051] Among them, the access network equipment of operator X is connected to the core network equipment of operator A, the core network equipment of operator B, and the core network equipment of operator C through the N2 and N3 interfaces respectively.

[0052] The access network equipment of operator X is used to access the terminal equipment of operators A, B and C, and forward the data of the terminal equipment to the core network equipment of the corresponding operator.

[0053] The solution for operator X's shared NG-RAN base station to broadcast the PLMN ID can be:

[0054] Solution 1: Operator X broadcasts a PLMN ID for each 5GC of operators A\B\C. The PLMN ID is the same as the one broadcast by the NG-RAN of the network of operators A\B\C. This is referred to as the multi-HPLMN solution or the old network number solution. In this way, the UE's PLMN selection process is the shortest, especially the UE's network disconnection time is short when it is turned on or recovers from no coverage. The existing PLMN ID is used, no code number resources are wasted, and the UE can be completely unaware.

[0055] Solution 2: Operator X broadcasts a PLMN ID for each 5GC of operators A\B\C, etc. This PLMN ID is different from the NG-RAN broadcast of operators A\B\C. This is referred to as the multi-VPLMN solution or multi-new network number solution. The PLMN ID selection process of the UE in this solution is relatively long, which will cause the UE to be offline for a long time when it is turned on or recovers from no coverage, and the use of multiple new VPLMN IDs will cause a waste of code resources.

[0056] Solution 3: Operator X broadcasts the same PLMN ID for multiple 5GCs of operators A\B\C. This PLMN ID is different from the PLMN ID broadcast by the NG-RAN of the operator A\B\C network. This is referred to as the single VPLMN solution. The PLMNID selection process of the UE is long, which will cause the UE to be offline for a long time when it is turned on or recovers from no coverage. When using an independent VPLMNID, there is no waste of code resources when using PLMN ID (X), and there is less waste of code resources when using PLMN ID (XY).

[0057] Compared with Scheme 1, Scheme 2 and Scheme 3 have a longer PLMN selection process for the UE, which will cause the UE to be offline for a long time when it is turned on or recovers from no coverage, and use multiple new VPLMN-IDs, resulting in a waste of number resources. However, in Scheme 1, when a UE belonging to other operators initiates network registration in a shared area covered by a shared operator, if the selected PLMN ID sent in the registration request is an HPLMN ID and the HPLMN ID carried in the UE's SIM card belongs to the same operator, the AMF network element of the shared operator will determine that the UE is a local network UE, so the AMF cannot correctly route the corresponding signaling and data to the home network, resulting in registration failure, and the UE cannot access the shared network.

[0058] For example, the terminal device is a user of operator A, operator A is the home operator, and operator X is the operator that provides indirect network sharing. When the terminal device is in a shared area where there is no 5G base station of operator A but there is a 5G base station of operator X, the indirect network sharing technology can be used to access the 5G base station of operator X to continue to enjoy 5G services. At this time, operator A controls the terminal device and provides services through the core network of operator X and the shared NG-RAN. This indirect network sharing technology can avoid the challenges of network operation and maintenance brought by the existing direct connection sharing technology where multiple core networks are directly connected to a wireless node at the same time.

[0059] The above is an explanation of the terms in this application.

[0060] In the network sharing scenario, the shared base station of the contractor operator is connected to the core network of other participating operators through the core network of the contractor operator, and broadcasts a PLMN ID for each of the other participating operators. The PLMN ID can be the same or different from the PLMN ID broadcast by the NG-RAN of the network of the other participating operators. When a UE belonging to another participating operator initiates network registration in the shared area covered by the contractor operator, the AMF network element of the contractor operator can recognize that the UE is accessing the network through indirect network sharing technology, and completes the network registration by interacting with the core network element of the corresponding participating operator.

[0061] In the related technology, the network elements of the core network of other participating operators cannot recognize that the registration process is for network registration for indirect network sharing, nor can they recognize the corresponding network of the contractor operator. As a result, the network elements of the core network of other participating operators cannot provide the correct contract data to the network of the contractor operator, resulting in the inability to complete network registration. Therefore, how to realize network registration of terminal devices in the indirect network sharing scenario is a technical problem that still needs to be solved.

[0062] In an embodiment of the present application, the AMF network element in the first PLMN network sends a policy request message to the UDM network element in the second PLMN network. Since the policy request message includes an identification parameter for identifying the first PLMN network, the UDM network element in the second PLMN network can identify that the policy request message comes from a shared network. In this way, the UDM network element in the second PLMN network determines and sends the target subscription data to the AMF network element in the first PLMN network based on the identification and subscription data list of the first PLMN network, and then the AMF network element in the first PLMN network can complete the registration of the shared network according to the target subscription data. Compared with the prior art, the UDM network element in the second PLMN network can identify that the policy request message comes from a shared network based on the policy request message including the identification of the first PLMN network, and therefore can accurately configure the target subscription data for the AMF network element in the first PLMN network, thereby enabling the terminal device to register with the shared network.

[0063] The technical solution of the embodiments of the present application can be used in various communication systems, which may be a third generation partnership project (3GPP) communication system, such as a long term evolution (LTE) system, or a 5G mobile communication system, an NR system, a vehicle to everything (NR V2X) system, or a system with a hybrid LTE and 5G network, or a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT), and other next generation communication systems, or a non-3GPP communication system without limitation.

[0064] The technical solutions of the embodiments of the present application can be applied to various communication scenarios, for example, one or more of the following communication scenarios: enhanced mobile broadband (eMBB), ultra-reliable low latency communication (URLLC), machine type communication (MTC), massive machine type communications (mMTC), SA, D2D, V2X, and IoT and other communication scenarios.

[0065] Among them, the above-mentioned communication systems and communication scenarios applicable to the present application are only examples, and the communication systems and communication scenarios applicable to the present application are not limited to these. They are uniformly described here and will not be repeated below.

[0066] In some embodiments, the terminal device involved in the present application may be a device for realizing communication functions. The terminal device may also be referred to as user equipment (UE), terminal, access terminal, user unit, user station, mobile station (MS), remote station, remote terminal, mobile terminal (MT), user terminal, wireless communication device, user agent or user device, etc. The terminal device may be, for example, a wireless terminal or a wired terminal in IoT, V2X, D2D, M2M, 5G network, or a future evolved PLMN. A wireless terminal may refer to a device with wireless transceiver functions, which may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it may also be deployed on the water (such as ships, etc.); it may also be deployed in the air (such as airplanes, balloons, and satellites, etc.).

[0067] Exemplarily, the terminal device may be a drone, an IoT device (e.g., a sensor, an electric meter, a water meter, etc.), a V2X device, a station (ST) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device (also referred to as a wearable smart device), a tablet computer or a computer with a wireless transceiver function, a virtual reality (VR) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a smart home, or a wireless terminal in a smart city. The terminal may be a wireless terminal in a home, a vehicle-mounted terminal, a vehicle with vehicle-to-vehicle (V2V) communication capability, an intelligent connected vehicle, a drone with UAV to UAV (U2U) communication capability, etc. The terminal may be mobile or fixed, and this application does not make specific restrictions on this.

[0068] In order to implement the shared network registration method provided in the embodiment of the present application, the embodiment of the present application provides a shared network registration device, which is used to execute the shared network registration method provided in the embodiment of the present application. Figure 2 This is a schematic diagram of a shared network registration device provided in an embodiment of the present application. Figure 2 As shown, the registration device 200 of the shared network includes at least one processor 201, a communication line 202, and at least one communication interface 204, and may also include a memory 203. The processor 201, the memory 203 and the communication interface 204 may be connected via the communication line 202.

[0069] The processor 201 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, such as one or more digital signal processors (DSP), or one or more field programmable gate arrays (FPGA).

[0070] The communication link 202 may include a path for transmitting information between the above-mentioned components.

[0071] The communication interface 204 is used to communicate with other devices or communication networks, and can use any transceiver-like device, such as Ethernet, radio access network (RAN), WLAN, etc.

[0072] The memory 203 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to include or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0073] In one possible design, the memory 203 can exist independently of the processor 201, that is, the memory 203 can be a memory outside the processor 201. In this case, the memory 203 can be connected to the processor 201 through the communication line 202, and is used to store execution instructions or application code, and the processor 201 controls the execution to implement the registration method of the shared network provided in the following embodiment of the present application. In another possible design, the memory 203 can also be integrated with the processor 201, that is, the memory 203 can be the internal memory of the processor 201, for example, the memory 203 is a high-speed cache, which can be used to temporarily store some data and instruction information, etc.

[0074] As an implementation method, the processor 201 may include one or more CPUs, for example Figure 2 As another implementation, the registration device 200 of the shared network may include multiple processors, such as Figure 2 As another implementation, the registration device 200 for sharing the network may further include an output device 205 and an input device 206.

[0075] Below, combined with the attached Figure 3 The registration method of the shared network provided in the embodiment of the present application is described in detail. Figure 3 As shown, the registration method of the shared network includes:

[0076] S301, the AMF network element in the first PLMN network sends a subscription data acquisition request message to the UDM network element in the second PLMN network. Correspondingly, the UDM network element in the second PLMN network receives the subscription data acquisition request message sent by the AMF network element in the first PLMN network.

[0077] The subscription data acquisition request information includes parameters for identifying the first PLMN network.

[0078] Optionally, the subscription data acquisition request information further includes a selected PLMN ID and a subscriber confidentiality identifier (Subscriber Confidentiality Identifier, SUCI), where the SUCI includes the HPLMN ID.

[0079] S302. The UDM network element in the second PLMN network determines the target subscription data based on the identifier and subscription data list of the first PLMN network.

[0080] The subscription data list includes subscription data corresponding to an identifier of at least one PLMN network.

[0081] Optionally, the subscription data list includes an identifier of at least one PLMN network and subscription data corresponding to the identifier of at least one PLMN network.

[0082] In a possible implementation manner, a unified data management (UDM) network element in the second PLMN network obtains a subscription data list through a server.

[0083] In another possible implementation manner, the UDM network element in the second PLMN network obtains the subscription data list through professional equipment.

[0084] It needs to be explained that the subscription data list is obtained through negotiation between the operator to which the second PLMN network belongs and other operators, and relevant technical personnel store the subscription data list in the UDM network element in the second PLMN network through professional equipment.

[0085] Optionally, the professional equipment may update the subscription data list in the UDM network element in the second PLMN network in real time according to the agreement between the operators.

[0086] S303: The UDM network element in the second PLMN network sends the target subscription data to the AMF network element in the first PLMN network. Correspondingly, the AMF network element in the first PLMN network receives the target subscription data from the UDM network element in the second PLMN network.

[0087] In one possible implementation, the UDM network element in the second PLMN network sends the target subscription data to the AMF network element in the first PLMN network through a private network channel.

[0088] It needs to be explained that the UDM network element in the second PLMN network sends the target contract data to the AMF network element in the first PLMN network through a private network channel, which can improve the speed and reliability of the target contract data transmission.

[0089] S304. The AMF network element in the first PLMN network completes the registration of the shared network based on the target subscription data.

[0090] Optionally, the AMF network element in the first PLMN network may also send a second registration response message to the terminal device. Accordingly, the terminal device sends a registration completion indication to the AMF network element. The second registration response message is used to indicate that the AMF network element agrees to register the terminal device.

[0091] Further, when registering the terminal device in the first PLMN network, the AMF can use the AUSF in the first PLMN network to authenticate the terminal device, and the AMF network element can send a registration request message to the UDM network element in the first PLMN network, so that the UDM network element in the first PLMN network saves the session of the terminal device during the registration process and completes the registration of the terminal device in the first PLMN network. UDM and PCF network policies, and obtain network policies from the PCF network element in the first PLMN network.

[0092] It should be explained that the shared network registration method of the present application can also be applied to signaling processes between other core network elements, but they will not be described one by one here.

[0093] The above scheme brings at least the following beneficial effects: In the embodiment of the present application, the AMF network element in the first PLMN network sends a subscription data acquisition request message to the UDM network element in the second PLMN network. Since the subscription data acquisition request message contains an identification parameter for identifying the first PLMN network, the UDM network element in the second PLMN network can identify that the policy request message comes from the shared network. In this way, the UDM network element in the second PLMN network determines and sends the target subscription data to the AMF network element in the first PLMN network based on the identification and subscription data list of the first PLMN network, and then the AMF network element in the first PLMN network can complete the registration of the shared network according to the target subscription data. Compared with the prior art, the UDM network element in the second PLMN network in the present application can identify that the subscription data acquisition request message comes from the shared network based on the subscription data acquisition request message containing the identification of the first PLMN network, and then accurately configure the target subscription data for the AMF network element in the first PLMN network, so that the AMF network element in the first PLMN network completes the registration of the shared network based on the target subscription data, thereby realizing the registration of the terminal device to the shared network.

[0094] In one possible implementation, combining Figure 3 ,like Figure 4 As shown, in the above S301, before the AMF network element in the first PLMN network sends the subscription data acquisition request information to the UDM network element in the second PLMN network, the AMF network element in the first PLMN network generates the subscription data acquisition request information. The process of the AMF network element in the first PLMN network generating the subscription data acquisition request information can be specifically implemented through the following S401-S403.

[0095] S401. The AMF network element in the first PLMN network receives registration request information from a terminal device.

[0096] The registration request information includes the selected PLMN ID and SUCI, and the SUCI includes the HPLMN ID.

[0097] In one possible implementation, when the terminal device moves to a cell served by the first PLMN network, the AMF network element in the first PLMN network receives registration request information from the terminal device.

[0098] It should be explained that when the terminal device moves to a cell served by the first PLMN network, the base station in the first PLMN network will send multiple PLMN IDs to the terminal device. The terminal device selects a PLMN ID from the multiple PLMN IDs, and sends the selected PLMN ID and SUCI to the AMF network element in the first PLMN network.

[0099] S402. Based on the selected PLMN ID and HPLMN ID, it is identified that the terminal device accesses the network through the indirect network sharing technology, and the AMF network element in the first PLMN network generates indirect network sharing parameters.

[0100] The identifier used to identify the first PLMN network and the terminal device access the network through an indirect network sharing technology.

[0101] Optionally, the indirect network sharing parameter includes an identifier of the first PLMN network.

[0102] Optionally, when the selected PLMN ID and HPLMN ID both belong to the network identifier of the second PLMN network, the AMF network element in the first PLMN network generates indirect network sharing parameters.

[0103] It is understandable that the indirect network sharing parameter may be the PLMN ID of the contractor operator itself (ie, VPLMNID) or a dedicated PLMN ID negotiated between the contractor operator and the participating operator or an indirect network sharing indication.

[0104] Optionally, indirect network sharing parameters may be applied to all cross-operator signaling.

[0105] It needs to be explained that, when the selected PLMN ID is different from the HPLMN ID, the AMF network element in the first PLMN network will generate and send a second indication message to the terminal device, and the second indication message is used to indicate that the terminal access request has failed.

[0106] S403. The AMF network element in the first PLMN network generates subscription data acquisition request information according to the indirect network sharing parameters.

[0107] In one possible implementation, the AMF network element in the first PLMN network adds the indirect network sharing parameters to the subscription data acquisition request information.

[0108] The above scheme brings at least the following beneficial effects: In the embodiment of the present application, the AMF network element in the first PLMN network determines whether the terminal device performs shared network services based on the selected PLMN ID and HPLMN ID sent by the terminal device, and then. Based on the selected PLMN ID and HPLMN ID, when it is identified that the terminal device accesses the network through the indirect network sharing technology, indirect network sharing parameters and subscription data acquisition request information are generated, so that the UDM network element in the second PLMN network can identify the service requirements of the terminal device.

[0109] In one possible implementation, combining Figure 4 ,like Figure 5 As shown, in the above S301, after the AMF network element in the first PLMN network sends the subscription data acquisition request information to the UDM network element in the second PLMN network, the AMF network element in the first PLMN network registers the information of the terminal device with the UDM network element in the second PLMN network. The process of the AMF network element in the first PLMN network registering the information of the terminal device with the UDM network element in the second PLMN network can be specifically implemented through the following S501-S502.

[0110] S501. An AMF network element in a first PLMN network determines a second PLMN network corresponding to an HPLMN ID based on the HPLMN ID.

[0111] Optionally, after the AMF network element in the first PLMN network determines the second PLMN network corresponding to the HPLMN ID based on the HPLMN ID, the AMF network element in the first PLMN network sends a first request message to the UDM network element in the second PLMN network.

[0112] The first request information includes a session message of the terminal device and an access type of the terminal device.

[0113] Optionally, the UDM network element in the second PLMN network receives and saves the first request information.

[0114] S502: The UDM network element in the second PLMN network sends a first response message to the AMF network element in the first PLMN network. Correspondingly, the AMF network element in the first PLMN network receives the first response message from the UDM network element in the second PLMN network.

[0115] The first response information is used to instruct the UDM network element to complete the creation of registration information.

[0116] In a possible implementation, the UDM network element in the second PLMN network sends second indication information to the AMF network element in the first PLMN network. The second indication information is used to indicate that the session message of the terminal device and the access type of the terminal device have been saved.

[0117] Exemplarily, the first request information includes Nudm_UECM_Registration service operation and / or Nudm_SDM_Get service operation.

[0118] The above scheme brings at least the following beneficial effects: In an embodiment of the present application, the AMF network element in the first PLMN network registers the session information of the terminal device in the UDM network element in the second PLMN network based on the HPLMN ID, so that the second PLMN network can serve the terminal device.

[0119] In one possible implementation, combining Figure 4 ,like Figure 6 As shown, in S304, after the AMF network element in the first PLMN network completes the registration of the shared network based on the target subscription data, the AMF network element in the first PLMN network establishes a PDU session. The process of the AMF network element in the first PLMN network establishing a PDU session can be specifically implemented through the following S601-S602.

[0120] S601. The AMF network element in the first PLMN network receives a first PDU session establishment request message from a terminal device.

[0121] The first PDU session establishment request information includes session information of the terminal device.

[0122] In one possible implementation, the AMF network element in the first PLMN network receives the first PDU session establishment request information from the terminal device through the base station, and determines the target session management function (Session Management Function, SMF) network element according to the session information of the terminal device.

[0123] Among them, the target SMF network element is the SMF network element in the first PLMN network.

[0124] S602. The AMF network element in the first PLMN network sends a second PDU session establishment request message to the SMF network element in the first PLMN network, so that the SMF network element in the first PLMN network sends a third PDU session establishment request message to the SMF network element in the second PLMN network.

[0125] The second PDU session establishment request information includes indirect network sharing parameters, and the third PDU session establishment request information includes indirect network sharing parameters.

[0126] In one possible implementation, the AMF network element in the first PLMN network sends a second PDU session establishment request message to the target SMF network element.

[0127] It needs to be explained that after the target SMF network element receives the second PDU session establishment request information, it determines the target user plane network element (User Plane Function, UPF) network element in the second PLMN network based on the second PDU session establishment request information, and then obtains the N4 session, and sends the third PDU session establishment request information to the SMF network element in the second PLMN network through the N4 session.

[0128] The above scheme brings at least the following beneficial effects: In the embodiment of the present application, the AMF network element in the first PLMN network sends a second PDU session establishment request message to the SMF network element in the first PLMN network. Since the second PDU session establishment request message includes an indirect network sharing parameter, the SMF network element in the first PLMN network can recognize that the terminal device needs to perform a shared network service, so that the SMF network element in the first PLMN network can quickly perform a network sharing session establishment process.

[0129] In one possible implementation, combining Figure 3 ,like Figure 7 As shown, S303, the process of the UDM network element in the second PLMN network sending the target subscription data to the AMF network element in the first PLMN network can be specifically implemented through the following S701.

[0130] S701. When the UDM network element in the second PLMN network does not have target subscription data, the UDM network element in the second PLMN network sends first indication information to the AMF network element in the first PLMN network.

[0131] Among them, the first indication information is used to indicate that the AMF network element registration in the first PLMN network has failed.

[0132] It needs to be explained that when the AMF network element in the first PLMN network receives the first indication information, it will send registration failure indication information to the terminal device.

[0133] Furthermore, the terminal device may choose to initiate the PDU session establishment process again.

[0134] The above scheme brings at least the following beneficial effects: In an embodiment of the present application, when the target subscription data does not exist in the UDM network element in the second PLMN network, the UDM network element in the second PLMN network sends a first indication message to the AMF network element in the first PLMN network. In this way, the terminal device can send the reported information error in time, detect and modify it, and then request to establish the registration party of the shared network again in time.

[0135] Combined with Figure 8 The registration method of the shared network provided in the embodiment of the present application is described in detail. Figure 8 As shown, the registration method of the shared network includes:

[0136] S801. The terminal device sends a registration request message to the RAN.

[0137] S802. RAN selects a new AMF based on the registration request information.

[0138] S803. RAN sends a registration request message to the new AMF.

[0139] S804. The new AMF sends the first information to the old AMF.

[0140] Among them, the first information includes: Namf-Communication-UEContextTransfer.

[0141] S805. The old AMF sends the first response information to the new AMF.

[0142] Among them, the first response information includes: Namf-Communication-UEContextTransfer response.

[0143] S806. The new AMF sends an identity authentication request message to the terminal device.

[0144] S807. The terminal device sends an identity authentication response message to the new AMF.

[0145] S808. The new AMF selects AUSF.

[0146] S809. The new AMF performs identity authentication.

[0147] S810. The new AMF notifies the old AMF to complete the registration of the terminal device.

[0148] S811. The new AMF initiates an identity request process to the terminal device.

[0149] S812. The new AMF determines whether to perform emergency registration.

[0150] S813: The new AMF selects a target UDM.

[0151] The target UDM is a UDM in another network.

[0152] S814. The new AMF sends registration information to the target UDM.

[0153] S815. The new AMF sends indirect network sharing parameters to the target UDM.

[0154] S816. The new AMF sends subscription information to the target UDM.

[0155] S817. The new AMF sends access information to the target UDM.

[0156] S818. The old AMF sends a cancellation message to the target UDM.

[0157] S819. The new AMF selects PCF.

[0158] S820: Determine the registration type.

[0159] S821. The new AMF creates an association with the N3 IWF.

[0160] S822. The new AMF sends a registration acceptance message to the terminal device.

[0161] S823. The new AMF sends a registration completion message to the terminal device.

[0162] S824. The new AMF sends a user change indication to the target UDM.

[0163] S825. The new AMF sends N2 information to the RAN.

[0164] S826. The new AMF sends target indication information to the target UDM.

[0165] The target indication information is used to indicate conversational speech isomorphism support.

[0166] The above scheme brings at least the following beneficial effects: In the embodiment of the present application, the AMF network element in the first PLMN network sends a subscription data acquisition request message to the UDM network element in the second PLMN network. Since the subscription data acquisition request message contains an identification parameter for identifying the first PLMN network, the UDM network element in the second PLMN network can identify that the policy request message comes from the shared network. In this way, the UDM network element in the second PLMN network determines and sends the target subscription data to the AMF network element in the first PLMN network based on the identification and subscription data list of the first PLMN network, and then the AMF network element in the first PLMN network can complete the registration of the shared network according to the target subscription data. Compared with the prior art, the UDM network element in the second PLMN network in the present application can identify that the subscription data acquisition request message comes from the shared network based on the subscription data acquisition request message containing the identification of the first PLMN network, and then accurately configure the target subscription data for the AMF network element in the first PLMN network, so that the AMF network element in the first PLMN network completes the registration of the shared network based on the target subscription data, thereby realizing the registration of the terminal device to the shared network.

[0167] Combined with Fig. 9 The method for establishing a session in a shared network provided in an embodiment of the present application is described in detail. Fig. 9 As shown, the method for establishing a session in the shared network includes:

[0168] S901. The terminal device sends a PDU session establishment request message to the first AMF.

[0169] S902. The first AMF selects the first SMF.

[0170] S903. The first AMF sends a PDU session establishment request message to the first SMF.

[0171] The PDU session establishment request information includes indirect network sharing parameters.

[0172] S904: The first SMF selects the first UPF.

[0173] S905. The first SMF sends an N4 session request to the first UPF.

[0174] S906. The first SMF sends a PDU session establishment request message to the second SMF.

[0175] The PDU session establishment request information includes indirect network sharing parameters.

[0176] S907. The second SMF obtains the contract data from the second UDM.

[0177] S908. Perform security authentication for establishing a PDU session.

[0178] S909. The second SMF selects PCF.

[0179] S910. The second SMF initiates obtaining the SM policy from the PCF.

[0180] S911. The second SMF selects the second UPF.

[0181] S912. The second SMF initiates a signaling modification process.

[0182] S913. Establish an N4 session between the second SMF and the second UPF.

[0183] S914. The second SMF sends PDU session response information to the first SMF.

[0184] S915. Establish an N4 session between the first SMF and the first UPF.

[0185] S916. The first SMF sends second information to the first AMF.

[0186] The second information includes the PDU session identifier, N1SM information and N2SM information.

[0187] S917. The first AMF sends N2 PDU session request information to the RAN.

[0188] S918. RAN establishes RRC connection information with the terminal device.

[0189] S919. RAN sends N2 PDU session response information to the first AMF.

[0190] S920. The first AMF sends third information to the first SMF.

[0191] The third information includes Nsmf-PDUD Session-Update SM Context Request.

[0192] S921. The first SMF establishes an N4 session with the first UPF.

[0193] S922. The first SMF sends the fourth information to the first AMF.

[0194] Among them, the fourth information includes Nsmf-PDUD Session-Update SM Context Reponse.

[0195] S923. The first SMF notifies the first AMF to release the session.

[0196] S924: Determine the PDU session type.

[0197] S925. The first SMF notifies the second SMF that the Ethernet port has been detected.

[0198] It needs to be explained that the first AMF, the first SMF, and the first UPF are all network elements in the first PLMN network, and the second SMF and the second UPF are all network elements in the second PLMN network.

[0199] The above scheme brings at least the following beneficial effects: In the embodiment of the present application, the AMF network element in the first PLMN network sends a second PDU session establishment request message to the SMF network element in the first PLMN network. Since the second PDU session establishment request message includes an indirect network sharing parameter, the SMF network element in the first PLMN network can recognize that the terminal device needs to perform a shared network service, so that the SMF network element in the first PLMN network can quickly perform a network sharing session establishment process.

[0200] It can be seen that the technical solution provided by the embodiment of the present application is introduced above mainly from the perspective of the method. In order to realize the above functions, it includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should be easily aware that, in combination with the modules and algorithm steps of each example described in the embodiment disclosed herein, the embodiment of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0201] The embodiment of the present application can divide the functional modules of the registration device of the shared network according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. Optionally, the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation.

[0202] like Fig.10 , which is a schematic diagram of a structure of a registration device 100 for a shared network provided in an embodiment of the present application. The registration device 100 for a shared network includes: a communication unit 1001 and a processing unit 1002 .

[0203] Communication unit 1001 and processing unit 1002, communication unit 1001 is used to send subscription data acquisition request information to the UDM network element in the second PLMN network; the subscription data acquisition request information includes parameters for identifying the first PLMN network; communication unit 1001 is used to receive target subscription data from the UDM network element in the second PLMN network; processing unit 1002 is also used to complete the registration of the shared network based on the target subscription data.

[0204] Optionally, the communication unit 1001 is further used to receive registration request information from the terminal device; the registration request information includes the target public land mobile network identifier PLMN ID and the user confidentiality identifier SUCI, and the SUCI includes the belonging public land mobile network identifier HPLMN ID; the processing unit 1002 is further used to generate an indirect network sharing parameter when the selected PLMN ID and the HPLMN ID both belong to the network identifier of the second PLMN network; the indirect network sharing parameter is used to identify the identifier of the first PLMN network and the terminal device accessing the network through the indirect network sharing technology; the processing unit 1002 is also used to generate a subscription data acquisition request information according to the indirect network sharing parameter.

[0205] Optionally, the processing unit 1002 is further used to determine the second PLMN network corresponding to the HPLMN ID based on the HPLMN ID; the communication unit 1001 is further used to receive a first response message from a UDM network element in the second PLMN network, and the first response message is used to indicate that the UDM network element completes the creation of the registration information.

[0206] Optionally, the communication unit 1001 is also used to receive a first PDU session establishment request information from a terminal device; the first PDU session establishment request information includes the session information of the terminal device; the communication unit 1001 is also used to send a second PDU session establishment request information to the session management function SMF network element in the first PLMN network, so that the SMF network element in the first PLMN network sends a third PDU session establishment request information to the SMF network element in the second PLMN network; the second PDU session establishment request information includes an indirect network sharing parameter, and the third PDU session establishment request information includes an indirect network sharing parameter.

[0207] like Fig.11 , which is a schematic diagram of a structure of a registration device 110 for a shared network provided in an embodiment of the present application. The registration device 110 for a shared network includes: a communication unit 1101 and a processing unit 1102 .

[0208] The communication unit 1101 is used to receive a subscription data acquisition request message sent from an AMF network element in a first PLMN network; the subscription data acquisition request message includes parameters for identifying the first PLMN network; the processing unit 1102 is used to determine target subscription data based on an identifier of the first PLMN network and a subscription data list; the subscription data list includes an identifier of at least one PLMN network and subscription data corresponding to the identifier of at least one PLMN network; the communication unit 1101 is used to send target subscription data to an AMF network element in the first PLMN network.

[0209] Optionally, the communication unit 1101 is also used to instruct the communication unit 1101 to send a first indication message to the AMF network element in the first PLMN network when the target subscription data does not exist in the UDM network element in the second PLMN network; the first indication message is used to indicate that the registration of the AMF network element in the first PLMN network has failed.

[0210] Among them, processing unit 1002 and processing unit 1102 can be processors or controllers. They can implement or execute various exemplary logic blocks, modules and circuits described in combination with the contents disclosed in this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of DSP and microprocessors, etc. The communication unit can be a transceiver circuit or a communication interface, etc. The storage module can be a memory. When processing unit 1002 and processing unit 1102 are processors, the communication unit is a communication interface, and the storage module is a memory, the registration device of the shared network involved in the embodiment of the present application can be Figure 2 The registered devices of the shared network are shown.

[0211] Through the description of the above implementation methods, technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the network node is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, module and network node described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0212] An embodiment of the present application also provides a computer-readable storage medium, in which instructions are stored. When a computer executes the instructions, the computer executes each step in the method flow shown in the above method embodiment.

[0213] An embodiment of the present application also provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a computer program or instruction to implement the registration method of the shared network in the above method embodiment.

[0214] An embodiment of the present application provides a computer program product including instructions. When the instructions are executed on a computer, the computer is enabled to execute the registration method for a shared network in the above method embodiment.

[0215] Among them, the computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable computer disk, and a hard disk. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), registers, hard disks, optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any other form of computer-readable storage medium in a suitable combination of the above, or numerical values ​​in the art. An exemplary storage medium is coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an Application Specific Integrated Circuit (ASIC). In embodiments of the present invention, computer-readable storage media may be any tangible media that contains or stores a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0216] Since the apparatus, device, computer-readable storage medium, and computer program product in the embodiments of the present invention can be applied to the above-mentioned method, the technical effects that can be obtained can also refer to the above-mentioned method embodiments, and the embodiments of the present application will not be repeated here.

[0217] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for registering a shared network, characterized in that: The method is applied to an access and mobility management function AMF network element in a first public land mobile network PLMN network, and comprises: Sending a subscription data acquisition request message to a unified data management (UDM) network element in the second PLMN network; the subscription data acquisition request message includes the parameter used to identify the first PLMN network; Receiving target subscription data from a UDM network element in the second PLMN network; Based on the target subscription data, registration of the shared network is completed.

2. The method according to claim 1, characterized in that Before sending the subscription data acquisition request information to the UDM network element in the second PLMN network, the method further includes: receiving a registration request message from a terminal device; the registration request message includes a selected public land mobile network identifier PLMN ID and a user confidentiality identifier SUCI, the SUCI including a home public land mobile network identifier HPLMN ID; Based on the selected PLMN ID and the HPLMN ID, identifying that the terminal device accesses the network through an indirect network sharing technology, and generating an indirect network sharing parameter; the indirect network sharing parameter is used to identify the first PLMN network and the terminal device accesses the network through the indirect network sharing technology; The contract data acquisition request information is generated according to the indirect network sharing parameter.

3. The method according to claim 2, characterized in that Before sending the subscription data acquisition request information to the UDM network element in the second PLMN network, the method further includes: Based on the HPLMN ID, determining the second PLMN network corresponding to the HPLMN ID; Receive first response information from a UDM network element in the second PLMN network, where the first response information is used to indicate that the UDM network element has completed creating registration information.

4. The method according to claim 2, characterized in that: After completing the registration of the shared network based on the subscription data, the method further includes: Receiving a first PDU session establishment request message from a terminal device; the first PDU session establishment request message includes session information of the terminal device; A second PDU session establishment request message is sent to the session management function SMF network element in the first PLMN network, so that the SMF network element in the first PLMN network sends a third PDU session establishment request message to the SMF network element in the second PLMN network; the second PDU session establishment request message includes the indirect network sharing parameter, and the third PDU session establishment request message includes the indirect network sharing parameter.

5. A method for registering a shared network, characterized in that: Applied to a UDM network element in a second PLMN network, the method includes: Receiving a subscription data acquisition request message sent by an AMF network element in a first PLMN network; the subscription data acquisition request message includes a parameter for identifying the first PLMN network; Determine target subscription data based on the identifier of the first PLMN network and the subscription data list; the subscription data list includes subscription data corresponding to the identifier of at least one PLMN network; Send the target subscription data to the AMF network element in the first PLMN network.

6. The method according to claim 5, characterized in that The method further comprises: When the target subscription data does not exist in the UDM network element in the second PLMN network, a first indication message is sent to the AMF network element in the first PLMN network; the first indication message is used to indicate that the registration of the AMF network element in the first PLMN network has failed.

7. A registration device for a shared network, characterized in that: The device comprises a communication unit and a processing unit: The communication unit is used to send subscription data acquisition request information to the UDM network element in the second PLMN network; the subscription data acquisition request information includes a parameter for identifying the first PLMN network; The communication unit is used to receive target subscription data from the UDM network element in the second PLMN network; The processing unit is further configured to complete registration of the shared network based on the target subscription data.

8. A registration device for a shared network, characterized in that: The device comprises a communication unit and a processing unit: The communication unit is used to receive a subscription data acquisition request message sent by an AMF network element in a first PLMN network; the subscription data acquisition request message includes a parameter for identifying the first PLMN network; The processing unit is configured to determine target subscription data based on the identifier of the first PLMN network and the subscription data list; The subscription data list includes subscription data corresponding to the identifier of the at least one PLMN network; The communication unit is used to send the target subscription data to the AMF network element in the first PLMN network.

9. A registration device for a shared network, characterized in that: include: A processor and a memory; wherein the memory is used to store computer-executable instructions, and when the registration device of the shared network is running, the processor executes the computer-executable instructions stored in the memory to enable the registration device of the shared network to execute the registration method of the shared network described in any one of claims 1-6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes instructions, which, when executed by a registration device for a shared network, enable the computer to execute the registration method for a shared network according to any one of claims 1 to 6.

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